ROL_Stream.hpp

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// @HEADER
// *****************************************************************************
//               Rapid Optimization Library (ROL) Package
//
// Copyright 2014 NTESS and the ROL contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#pragma once
#ifndef ROL_STREAM_HPP
#define ROL_STREAM_HPP
 
#include <ostream>
#include <string>
#include "ROL_Ptr.hpp"
 
namespace ROL {
 
namespace details {
 
template<typename _CharT, typename _Traits>
class basic_nullstream : virtual public std::basic_ostream<_CharT, _Traits> {
public:
  explicit basic_nullstream() : std::basic_ostream<_CharT, _Traits>(NULL) {}
}; 
 
using nullstream = basic_nullstream<char, std::char_traits<char>>;
 
inline
Ptr<std::ostream> makeStreamPtr( std::ostream& os, bool noSuppressOutput=true ) {
  Ptr<std::ostream> retstream;
  if( noSuppressOutput ) retstream = makePtrFromRef<std::ostream>(os);
  else retstream = makePtr<nullstream>();
  return retstream; // noSuppressOutput ? makePtrFromRef( os ) : makePtr<nullstream>();
}
 
inline
Ptr<std::ostream> makeStreamPtr( Ptr<std::ostream> os, bool noSuppressOutput=true ) {
  Ptr<std::ostream> retstream;
  if( noSuppressOutput ) retstream = os;
  else retstream = makePtr<nullstream>();
  return retstream; // noSuppressOutput ? makePtrFromRef( os ) : makePtr<nullstream>();
//  return noSuppressOutput ? os : makePtr<nullstream>();
}
 
} // details
 
using details::nullstream;
using details::makeStreamPtr;
 
} // namespace ROL
 
 
#endif